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Title: Energy Loss for Heavy Quarks in Relation to Light Partons: Is Radiative Energy Loss for Heavy Quarks Anomalous?

Abstract

The scaling properties of jet-suppression measurements are compared for nonphotonic electrons (e{sup +}-) and neutral pions (pi{sup 0}) in Au+Au collisions at sq root(s{sub NN})=200 GeV. For a broad range of transverse momenta and collision centralities, the comparison is consistent with jet quenching dominated by radiative energy loss for both heavy and light partons. Less quenching is indicated for heavy quarks via e{sup +}-; this gives an independent estimate of the transport coefficient q-circumflex that agrees with its magnitude obtained from quenching of light partons via pi{sup 0}'s.

Authors:
; ; ; ; ; ; ; ; ; ;  [1]
  1. Department of Chemistry, Stony Brook University, Stony Brook, New York, 11794-3400 (United States)
Publication Date:
OSTI Identifier:
21370716
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 103; Journal Issue: 14; Other Information: DOI: 10.1103/PhysRevLett.103.142302; (c) 2009 The American Physical Society; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; B QUARKS; C QUARKS; COLLIDING BEAMS; ELECTRONS; ENERGY LOSSES; GEV RANGE 100-1000; GOLD 197 BEAMS; GOLD 197 REACTIONS; GOLD 197 TARGET; PIONS NEUTRAL; T QUARKS; TRANSVERSE MOMENTUM; BEAMS; BEAUTY PARTICLES; BOSONS; CHARM PARTICLES; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HEAVY ION REACTIONS; ION BEAMS; LEPTONS; LINEAR MOMENTUM; LOSSES; MESONS; NUCLEAR REACTIONS; PIONS; POSTULATED PARTICLES; PSEUDOSCALAR MESONS; QUARKS; TARGETS; TOP PARTICLES

Citation Formats

Lacey, Roy A, Wei, R, Ajitanand, N N, Alexander, J M, Gong, X, Jia, J, Mawi, A, Mohapatra, S, Reynolds, D, Salnikov, S, and Taranenko, A. Energy Loss for Heavy Quarks in Relation to Light Partons: Is Radiative Energy Loss for Heavy Quarks Anomalous?. United States: N. p., 2009. Web. doi:10.1103/PHYSREVLETT.103.142302.
Lacey, Roy A, Wei, R, Ajitanand, N N, Alexander, J M, Gong, X, Jia, J, Mawi, A, Mohapatra, S, Reynolds, D, Salnikov, S, & Taranenko, A. Energy Loss for Heavy Quarks in Relation to Light Partons: Is Radiative Energy Loss for Heavy Quarks Anomalous?. United States. doi:10.1103/PHYSREVLETT.103.142302.
Lacey, Roy A, Wei, R, Ajitanand, N N, Alexander, J M, Gong, X, Jia, J, Mawi, A, Mohapatra, S, Reynolds, D, Salnikov, S, and Taranenko, A. Fri . "Energy Loss for Heavy Quarks in Relation to Light Partons: Is Radiative Energy Loss for Heavy Quarks Anomalous?". United States. doi:10.1103/PHYSREVLETT.103.142302.
@article{osti_21370716,
title = {Energy Loss for Heavy Quarks in Relation to Light Partons: Is Radiative Energy Loss for Heavy Quarks Anomalous?},
author = {Lacey, Roy A and Wei, R and Ajitanand, N N and Alexander, J M and Gong, X and Jia, J and Mawi, A and Mohapatra, S and Reynolds, D and Salnikov, S and Taranenko, A},
abstractNote = {The scaling properties of jet-suppression measurements are compared for nonphotonic electrons (e{sup +}-) and neutral pions (pi{sup 0}) in Au+Au collisions at sq root(s{sub NN})=200 GeV. For a broad range of transverse momenta and collision centralities, the comparison is consistent with jet quenching dominated by radiative energy loss for both heavy and light partons. Less quenching is indicated for heavy quarks via e{sup +}-; this gives an independent estimate of the transport coefficient q-circumflex that agrees with its magnitude obtained from quenching of light partons via pi{sup 0}'s.},
doi = {10.1103/PHYSREVLETT.103.142302},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 14,
volume = 103,
place = {United States},
year = {2009},
month = {10}
}